Space rake: Difference between revisions
Jump to navigation
Jump to search
mNo edit summary |
Apple Bottom (talk | contribs) Since it's not clear who found this, mention it was probably Bill in the text, but don't pollute the template/category tree. |
||
| Line 1: | Line 1: | ||
{{Puffer|type=Rake|p=20|s=c/2|bx=22|by=19|name=Space rake|dir=Orthogonal|pname=spacerake | {{Puffer|type=Rake|p=20|s=c/2|bx=22|by=19|name=Space rake|dir=Orthogonal|pname=spacerake|c=65|life105=true|life106=true|plaintext=true|rle=true|animated=true}} | ||
'''Space rake''' is a [[period]] 20 forward [[glider]] [[rake]] constructed around 1971 | '''Space rake''' is a [[period]] 20 forward [[glider]] [[rake]] constructed around [[:Category:Patterns found in 1971|1971]], probably by [[Bill Gosper]]; it was the first known rake. It consists of an [[ecologist]] with a [[lightweight spaceship]] added to turn its dying debris into gliders. | ||
Note that if the back lightweight spaceship is flipped vertically and moved down by one [[cell]], then this becomes a period 20 backward glider rake, as shown below.<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip] pattern collection.</ref> When it hits a wall, it fires a glider in the other direction, and creates a block and a beehive. | Note that if the back lightweight spaceship is flipped vertically and moved down by one [[cell]], then this becomes a period 20 backward glider rake, as shown below.<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip] pattern collection.</ref> When it hits a wall, it fires a glider in the other direction, and creates a block and a beehive. | ||
Revision as of 22:40, 7 May 2016
| Space rake | |||||||
| View animated image | |||||||
| View static image | |||||||
| Pattern type | Rake Puffer | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 65 | ||||||
| Bounding box | 22 × 19 | ||||||
| Direction | Orthogonal | ||||||
| Period | 20 | ||||||
| Speed | c/2 | ||||||
| Discovered by | Unknown | ||||||
| Year of discovery | Unknown | ||||||
| |||||||
Space rake is a period 20 forward glider rake constructed around 1971, probably by Bill Gosper; it was the first known rake. It consists of an ecologist with a lightweight spaceship added to turn its dying debris into gliders.
Note that if the back lightweight spaceship is flipped vertically and moved down by one cell, then this becomes a period 20 backward glider rake, as shown below.[1] When it hits a wall, it fires a glider in the other direction, and creates a block and a beehive.
Image gallery
 RLE: here |
References
- ↑ Alan Hensel's lifep.zip pattern collection.
External links
- Space rake at the Life Lexicon